Sectional mold



March l0, 1925- R. HALEY Filed Feb; 14. 19

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R. HALEY SECTIONL MOLD March 10. 1925- 2 Sheets-Sheet 2 Filed Feb. 14. 1922 WITNESSES Patented Mar. 10, 1925.

UNITED STATES PATENT OFFICE.

BE'UIBEN BAILEY, OF BEAVER, PENNSYLVANIA.

sEcTIoNAL morn.'

Application led February 14, 1922. Serial No. 536,551.

To all 'whom zfmag comem.'

' mold which may be employed in the manufacture of glass articles of irregular shapes and which is adapted to be utilizedin connection with an automatic glass-pressing machine.

A further object is to produce a multipart mold capable of being used in' conjunction with an automatic glass-pressing machine and adapted for use in molding articles such as compotiers, pitchers, cups, etc., or any article which will not deliver from a block mold.

In automatic machines, the mold is ordinarily tilted to deliver the pressed article. Tilting of the mold isnot sufficient where an intermediate portion of the article molded is of less diameter than the end portions of the article or where the mold cavity is complex and not so formed that the article will fall 'free of the walls thereof when the mold is tilted'. One of the features of my invention is to produce a mold for forming such articles and one adapted toY accomplish the automatic release of the molded article when used in connection with an automatic machine such as an automatic press now commonly employed in-the manufacture of tumblers, shallow dishes, small lenses, and similar articles'.

In the drawings accompanying and forming a part hereof, Figure 1 is a vertical sectional view of a mold and associated apparatus embodying my invention. The section is taken on the longitudinal axis of the mold cavity.

Fig. 2 is a side elevation of apparatus embodying my invention in which the mold forming a part thereof is shown in the open position.

Fig. 8 is a sectional view of apparatus shown in Fig. 1, the section being taken at ri ht angles to the section of Fig. 1.

i 4 is a sectional view along the line 'IV-3V ofF 8.

In automatic presses, the molds are mounted on a mold table which ordinarily revolves in a step by step movement ,and is so arranged that each mold is successively moved to a charge-receiving position, a pressing.position and an article-delivering position. A gather of molten glass is delivered to the mold while it occupies the charge-receiving position. The mold then moves to the pressing position in which a plunger of the proper contour enters the mold cavity and presses the charge of glass contained therein. As soon as the plunger lifts free of the mold, the mold is moved toward the delivery position and, upon reaching that position, is tilted to discharge the molded article therefrom or the molded article is pushed upwardly out of the mold. Apparatus embodying my invention is adapted t0 be employed with such a machinen and is adapted to be automatically operated to release the pressed article from the mold cavity.

In the embodiment of the invention illustrated the mold proper 1s formed in three sections so arranged that movement imparted to one sectionwill cause the other sections to move withy relation thereto in such a way as to free the pressed article. This is accomplished in the apparatus illustrated by mounting one section so that it is movable in a guide formed in a mold support and by pivotally mounting the other sections thereto in such a way that .move ment of the first-mentioned section occasions a pivotal movement of the other sections with relation to the lirst section and an opening of the mold.4

In the drawings, I have diagrammatically illustrated a mold table 5 rovided with a recess 6 for the reception o a mold support 7. As shown, the mold support is mounted on the table by means of lugs'or trunnions 8f in such WayA that it is located within the recess 6. A mold section 9 is slidably mounted within a vertical way 10 provided in the support 7. This section is preferably cylindrical and, as shown, its upper end forms the bottom wall of the mold cavity. Mold sections 11 and 12 are pivotally secured to the section 9 and are preferably sgmmetricall located with `relation thereto.

ortion o the mold cavity is formed in eac section 11-12 and the point of pivotal connection between these sections and the section 9 is preferably located in an extension of the longitudinal axis of the mold cavity. As shown in the drawings, themold support is provided with a V-shaped way formed by laterally projecting inclined arms 13 symmetrically located with relation ,to guide 10 in which the section 9 is mounted. The base portion of each section 11-12 is so formed that the bottom of the mold formed by these base portions substantially iits the l-shaped way of the support when the mold is in the closed position illustrated in Fig. 1.A In Fig. 2, I have illustrated the positions assumed by the different parts of the mold when the section 9 is elevated or moved upwardly throughtheway 10. lt will vbe apparent that the upward movement ofthe section 9 tends to lift the sections 11-12 off the support 7 but that the weight of these sections causes them to pivot around the pivotal oint so that their upper ends move away rom each other, whereas their -lower outer edges slide along and are .supported by the guiding arms 13 of the support 7. The mold cavity is of necessity so designed that the re-entrant portions of the -wall thereof will swing free of the molded article as the sections 11-12 swing outwardly.

As shown in the drawings, the sections 11-12 are each pivotally mounted on a pin 14 which projects through a suitable aperture provided in the section 9. Each section 11-12 is preferably provided with two pinengaging extensions and the pin 1li is preferably a tapered pin locked in place by any suitable means, such as a cotter 15. The section 9 is preferably of suiicient length to extend approximately to the bottom of the support 7 and during the operation' of the press with which the apparatus is associated, its bottom face is adapted to ybe engaged by a plunger or so-called valve 16 located at the delivery station of the press and adapted to move upwardly for the purpose of lifting the section 9 to the position shown in Fig. 2 andof thereby swinging the sections 11-12 to a mold-opening position.

During the operation of the apparatus, the

vmold support 7, with the multi-part mold in place thereon, is properly mounted on the rotating table 5 of an automatic press. The co-operation of the support and the sections 1112 holds the mold in the closed position for the reception of a gather of molten glass.I After the gather has been delivered to the mold cavity, a mold ring 17 is located in place-around the top of the mold and a plunger 18 is forced downwardly into the mold cavity.- The mold ring is preferably of the usual type and is preferably so arranged as to positively lock the sections 11--12 in the closed positionY while it 'is in nplace. -As shown in the drawings, this is accomplished by providing a tongueandgroove :connection between the mold ring resonate and the sections 11-12. The mold ring li or edge around the molded article. The

p unger 18 is withdrawn from the mold and the mold ring 17 is lifted in the usual manl Ill-l1".

When the valve 16 lifts the mold section 9,`

the motion of the section 9 is guided bythe way 10 and is preferably such that the pivot pin 14 moves vertically.. Under such condit-ions, the mold sections 11 and 12 are subjected to a lifting force at their inner edges; consequently, their weight causes them to tilt outwardly as they move upwardly with relation to the support 7. The arms are preferably symmetrically located and equally inclined with relation to the vertical axis of the mold cavity;A consequently, they will limit and guide the outward til-ting of the sections 11 and 12. ln order to insure this outward, tilting, l may employ a guide 19 for one or both of the sections 11 and 12 so arranged that it will engage a pin or shoulder 20 located near the top of the section and insure an outward swing as the section moves upwardly. ln the drawingal have shown the guide or a finger 19 secured to one of the arms 13 and extending in a direction substantially parallel to the other arm 13. This finger is adapted to engage a pin o'r shoulder 20 on the section 11 and to thereby insure outward tilting of the section as it moves upwardly. lt will be understood that the arms 13 extend the entire length of the mold support and that a guiding finger 19 may be provided for each section 11-12.

As the valve 16 moves downwardly, the section 9 vfollows it and the mold sections 11-12 are caused to tilt inwardly' toward each' other as they move downwardly into the way formed by the inclined arms 13. When the section 9 reaches its lowermost posit-ion, the sections 11--12 occupy the mold closing positions and are held in that lll!) position by their weight and the co-opera- Y tion of -the inclined arms 13 and their in clined bases. During the operation of ypressing, the force of the spring plate and plunger accentuates the action of gravity and therefore acts to hold the mold closed. lt will be understood that three or more sections 11--12 may be pivotally secured to the central mold section 9 and that the mold support may be provided with guiding arms adapted to cooperate with the separate mold sections` of such a mold for the purpose of guiding and controlling their outward swin i l ile l have illustrated and described but one embodiment of my invention, it will be apparent that various changes, additions, modifications and omissions may be made in the apparatus illustrated without departing from thev spirit and scope-of lthe invention,

yasset forth by the appended claims.

sections each having a (part of the mold cavity formed therein, an means for pivotally securing the parts together at a single pivot point beyond one end of the mold cavity.

2. Ing'conibinatio'n' in a multi-part mold, mold sections, each having a part of `the mold carvityformed therein, and means located at one end of the mold cavity for holding said sections in fixed relative Apositions whereby they swing outwardly about a pivot point located in an extension ofthe longitudinal axis of the mold 'cavity to release the molded article from the mold cavity.

h 3. Inl combination with id mold support avin guiding arms, a mo section io rining agwall of e mold cavity and movable with relation to said support, and mold sections pivotally secured to said'first section and to eachother at a int located in an extension of the longitu inal axis of the mold cavity and guided by said arms during movement of said first mentioned section.

4: combination with a mold support, mold section movable in a Way formed in said. support, mold sections ivotally 'secured to said section and movab e with lrelation theretonbout a single pivot pointJ and means on said support for guiding the motion of s'aid last mentioned sections and for supporting said sections in a. mold closing position.

5. In a multi-part mold, a. .mold section formin a wall of the mold cavity, mold sections hinged together and pivotally secured to said 'first mentioned section and a .mold

a sect-ions and for liol i support for ing them. 1n a mold closing position.

guidin the movement said I 6. In a multi-part mold' "comprising-amold section, va plurality of mold sections Vforming therewith a mold cavity and 'pivotally secured thereto and to each other at. a point located in an extension of the iongitudinal axis of the mold cavity, in combinatioiiwitli a mold support for .holding said sections in a mold closing position and means forinoving said sections to a mold opening position.

v7. A mold support lia-ving 'a mold section receiving way formed therein for holding mold [sections in a' mold closing position, in combination with a multi-part mold, the scpaiate sections of which are pivotally dsecured -together at .a singlecpivot point 'and' so weighted as to drop to amold closing position in said way. 'f

8. In combination, witlia inoldsupport,-a

multi-part nio1dc'omprisin a mold section I forming a' Wall of the mol cavity, and two mold sections pivotally secured to said irst section to` turn about a single pivot oint and n aveacli having 'a portion 4of the mo d cavity formed therein, the pivot point of said last mentioned sections, being so located in an extension oftlie longitudinal axis of the mold cavity and the contour of the mold surface being such that^said sections Swing `free of the molded article as they swing outwardly 4about their pivot points. Y

In testimony whereof, I have hereunto subscribed my name this 7th day of February, 1922.

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